A circular, single or multipiece item, metallic or nonmetallic in composition, designed to be fitted in a circumferential groove in a piston and to spring outward against the cylinder wall to function as a seal or wiper. It is supplied in various cross-sectional shapes and is cut through at one point to allow for installation in the piston ring groove. It may include an expander. Excludes packing, preformed; retainer, oil seal; retainer, packing; ring, retaining; ring wiper; and seal ring, metal.
Classification: Parts for steam turbines
NSN 5925-00-269-2685
NSN 5920-00-981-5821
NSN 5905-01-447-3399
NSN 6105-01-422-3765
NSN 6620-01-100-0431
NSN 5910-00-059-1105
NSN 5930-00-518-0872
NSN 5945-01-586-4329
NSN 6150-00-222-8988
NSN 6645-00-296-8310
NSN 6650-01-630-3410
NSN 7035-00-981-7216